\def\baseE{2.38935 0.677299 2.27734 0.677299 2.20278 0.530557 2.12584 0.412473 2.04151 0.320338 1.94477 0.251277 1.83055 0.202418 1.69399 0.170967 1.52984 0.154215 1.33333 0.149288 1.22535 0.149288 1.08534 0.152819 0.966268 0.162755 0.878814 0.177947 0.833321 0.197327 0.811807 0.238303 0.805319 0.321323 0.805319 1.30935 1.42128 1.30935 1.53222 1.3064 1.62107 1.29597 1.69095 1.27536 1.74474 1.24177 1.78571 1.19266 1.81667 1.12533 1.84089 1.03705 1.86134 0.925292 1.95331 0.925292 1.95331 1.85329 1.86134 1.85329 1.84196 1.74818 1.82332 1.67272 1.80164 1.61754 1.77331 1.57328 1.64825 1.49781 1.42128 1.47334 0.805319 1.47334 0.805319 2.36135 0.810739 2.42975 0.830775 2.4713 0.871095 2.49175 0.937281 2.49734 1.47728 2.49734 1.63035 2.49405 1.75336 2.48231 1.85034 2.45932 1.92523 2.42228 1.98214 2.36833 2.02508 2.29475 2.05809 2.19868 2.08527 2.07731 2.18529 2.07731 2.1733 2.64933 0.0493522 2.64933 0.0493522 2.57329 0.149206 2.56237 0.228531 2.54628 0.289462 2.52263 0.334297 2.48929 0.365173 2.44388 0.384471 2.38426 0.394407 2.30814 0.397281 2.21329 0.397281 0.437354 0.394243 0.342263 0.383896 0.26573 0.364106 0.20562 0.332737 0.159799 0.287655 0.126131 0.226807 0.102564 0.148057 0.0870438 0.0493522 0.077354 0.0493522 0.00131387 2.20935 0.00131387 } \psset{lightsrc=40 20 25,viewpoint=50 10 20 rtp2xyz,Decran=30} \begin{pspicture}(-6,-2)(6,6) \psframe(-6,-2)(6,6) \psSolid[object=grille,base=0 4 -10 10,hue=0 1,grid]% \psSolid[object=prisme,h=1,hue=0 1,incolor=yellow, base=\baseE,ngrid=1,decal=1,RotZ=90,RotX=90,unit=4](0,-1,0) \end{pspicture}